Issue34143
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Created on 2018-07-18 07:26 by lktoken, last changed 2022-04-11 14:59 by admin. This issue is now closed.
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File name | Uploaded | Description | Edit | |
pythonbug.png | lktoken, 2018-07-18 07:26 | Screenshot of the error section |
Messages (8) | |||
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msg321863 - (view) | Author: lktoken (lktoken) | Date: 2018-07-18 07:26 | |
In errno.py, the constant EDEADLK has a defined value of 11, and the constant EAGAIN has a defined value of 35, which is exactly the opposite of the linux constant definition. See: https://www.thegeekstuff.com/2010/10/linux -error-codes/. |
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msg321871 - (view) | Author: Karthikeyan Singaravelan (xtreak) * | Date: 2018-07-18 09:39 | |
Can you please add some info on how the errorcode dictionary is generated as shown in the picture along with your OS, system information? They seem to have the right values as per the Linux error codes in my Ubuntu box. I might be wrong on the OS on which this happens since you have mentioned it's the opposite of Linux. cpython git:(master) ✗ rlwrap ./python Python 3.8.0a0 (heads/master:35c0809, Jul 16 2018, 10:29:23) [GCC 5.4.0 20160609] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import errno >>> errno.EDEADLK 35 >>> errno.EAGAIN 11 ➜ cpython git:(master) ✗ rlwrap python2.7 Python 2.7.12 (default, Dec 4 2017, 14:50:18) [GCC 5.4.0 20160609] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import errno >>> errno.EDEADLK 35 >>> errno.EAGAIN 11 Machine details and values in header files as below ➜ cpython git:(master) ✗ rg 'EDEADLK|EAGAIN' /usr/include/asm-generic/errno-base.h /usr/include/asm-generic/errno.h /usr/include/asm-generic/errno-base.h 14:#define EAGAIN 11 /* Try again */ /usr/include/asm-generic/errno.h 6:#define EDEADLK 35 /* Resource deadlock would occur */ ➜ cpython git:(master) ✗ uname -a Linux ubuntu-s-1vcpu-1gb-blr1-01 4.4.0-127-generic #153-Ubuntu SMP Sat May 19 10:58:46 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux Thanks |
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msg321872 - (view) | Author: Karthikeyan Singaravelan (xtreak) * | Date: 2018-07-18 09:53 | |
Please ignore about how it's generated. I tried `errno.errorcode` and can get the dictionary as in the picture with https://docs.python.org/3.8/library/errno.html#errno.errorcode. I think this has to be used as below and also would like to know how other error names have the correct numeric value except for the EDEADLK and EAGAIN which is generated at Modules/errnomodule.c . Using them with `os.strerror` also gets me the correct information ➜ cpython git:(master) ✗ rlwrap ./python Python 3.8.0a0 (heads/master:35c0809, Jul 16 2018, 10:29:23) [GCC 5.4.0 20160609] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import os >>> os.strerror(35) 'Resource deadlock avoided' >>> os.strerror(11) 'Resource temporarily unavailable' Thanks |
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msg321932 - (view) | Author: lktoken (lktoken) | Date: 2018-07-19 07:16 | |
The picture is a screenshot from the IDEA editor on my OSX system. This may be just a problem with the python I am using. So sad. Python 2.7.10 (default, Oct 6 2017, 22:29:07) [GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import errno >>> errno.EDEADLK 11 >>> errno.EAGAIN 35 >>> import os >>> os.strerror(11) 'Resource deadlock avoided' >>> os.strerror(35) 'Resource temporarily unavailable' >>> Any more, follow your shell commands, I found this: ➜ ~ grep -E 'EDEADLK|EAGAIN' /usr/include/sys/errno.h #define EDEADLK 11 /* Resource deadlock avoided */ /* 11 was EAGAIN */ #define EAGAIN 35 /* Resource temporarily unavailable */ #define EWOULDBLOCK EAGAIN /* Operation would block */ And my OS info: ➜ ~ uname -a Darwin lktokendeMacBook-Air.local 17.6.0 Darwin Kernel Version 17.6.0: Tue May 8 15:22:16 PDT 2018; root:xnu-4570.61.1~1/RELEASE_X86_64 x86_64 Thank you very much. |
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msg321933 - (view) | Author: Ronald Oussoren (ronaldoussoren) * | Date: 2018-07-19 07:33 | |
I’m not sure if I understand correctly. Is your report about the difference in the values of EAGAIN between Linux and macOS? If so, that is not a bug: the relevant standards only document the name and type of these constants and not their values. The value can and does vary across operating systems. -- On the road, hence brief. Op 19 jul. 2018 om 08:16 heeft lktoken <report@bugs.python.org> het volgende geschreven: > > lktoken <zhwbchina@gmail.com> added the comment: > > The picture is a screenshot from the IDEA editor on my OSX system. This may be just a problem with the python I am using. So sad. > Python 2.7.10 (default, Oct 6 2017, 22:29:07) > [GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)] on darwin > Type "help", "copyright", "credits" or "license" for more information. >>>> import errno >>>> errno.EDEADLK > 11 >>>> errno.EAGAIN > 35 >>>> import os >>>> os.strerror(11) > 'Resource deadlock avoided' >>>> os.strerror(35) > 'Resource temporarily unavailable' >>>> > > Any more, follow your shell commands, I found this: > > ➜ ~ grep -E 'EDEADLK|EAGAIN' /usr/include/sys/errno.h > #define EDEADLK 11 /* Resource deadlock avoided */ > /* 11 was EAGAIN */ > #define EAGAIN 35 /* Resource temporarily unavailable */ > #define EWOULDBLOCK EAGAIN /* Operation would block */ > > And my OS info: > ➜ ~ uname -a > Darwin lktokendeMacBook-Air.local 17.6.0 Darwin Kernel Version 17.6.0: Tue May 8 15:22:16 PDT 2018; root:xnu-4570.61.1~1/RELEASE_X86_64 x86_64 > > Thank you very much. > > ---------- > > _______________________________________ > Python tracker <report@bugs.python.org> > <https://bugs.python.org/issue34143> > _______________________________________ |
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msg321935 - (view) | Author: lktoken (lktoken) | Date: 2018-07-19 07:40 | |
yes, I agree that this is not a bug. I used to think that this value is the same in macOS and Linux. Now it seems that I am wrong. And sorry for disturbing you. |
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msg321936 - (view) | Author: Karthikeyan Singaravelan (xtreak) * | Date: 2018-07-19 07:52 | |
Thanks for the details @lktoken. I assumed that you were on Linux and had the opposite values. Verified it on my Mac and they report the same values as yours. I think the values are also different for Windows machines as @ronaldoussoren noted in his comment EAGAIN - 11 EDEADLK - 36 (Not 35 like Linux) Ref : https://docs.microsoft.com/en-us/cpp/c-runtime-library/errno-doserrno-sys-errlist-and-sys-nerr Thanks |
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msg321962 - (view) | Author: Ronald Oussoren (ronaldoussoren) * | Date: 2018-07-19 18:03 | |
This is not a bug and the issue can be closed. I’ll do so when I get back to my computer in a couple of days. -- On the road, hence brief. Op 19 jul. 2018 om 08:52 heeft Karthikeyan Singaravelan <report@bugs.python.org> het volgende geschreven: > > Karthikeyan Singaravelan <tir.karthi@gmail.com> added the comment: > > Thanks for the details @lktoken. I assumed that you were on Linux and had the opposite values. Verified it on my Mac and they report the same values as yours. I think the values are also different for Windows machines as @ronaldoussoren noted in his comment > > EAGAIN - 11 > EDEADLK - 36 (Not 35 like Linux) > > Ref : https://docs.microsoft.com/en-us/cpp/c-runtime-library/errno-doserrno-sys-errlist-and-sys-nerr > > Thanks > > ---------- > > _______________________________________ > Python tracker <report@bugs.python.org> > <https://bugs.python.org/issue34143> > _______________________________________ |
History | |||
---|---|---|---|
Date | User | Action | Args |
2022-04-11 14:59:03 | admin | set | github: 78324 |
2018-07-19 19:26:29 | brett.cannon | set | status: open -> closed resolution: not a bug stage: resolved |
2018-07-19 18:03:00 | ronaldoussoren | set | messages: + msg321962 |
2018-07-19 07:52:37 | xtreak | set | messages: + msg321936 |
2018-07-19 07:40:45 | lktoken | set | messages: + msg321935 |
2018-07-19 07:33:21 | ronaldoussoren | set | messages: + msg321933 |
2018-07-19 07:16:50 | lktoken | set | messages: + msg321932 |
2018-07-18 09:53:30 | xtreak | set | messages: + msg321872 |
2018-07-18 09:39:06 | xtreak | set | nosy:
+ xtreak messages: + msg321871 |
2018-07-18 07:26:34 | lktoken | create |